Apparently it's called a frogfish, and while it looks sort of cute from afar, this thing is ugly... and fascinating. DarkRoastedBlend has a whole gallery of different types of frogfish, from the fluffy to the warty.
Once again, animal cruelty is NOT funny. I don't understand why you find it neat that this poor fish is being forced to walk on the ocean floor. I hope PETA takes this site down once and for all for it's repeated posting of poor animals being tortured for someone's amusement. You should be ashamed.
http://animals.nationalgeographic.com/animals/amphibians/axolotl.html
And i would walk five hundred more
Just to be the man who walked a thousand miles
To fall down at your door"
That's what I was thinking about when I watched the clip!